Run Rabbit Run winner Zeke Tiernan rolls toward the finish line Saturday in Steamboat Springs. The race taxed Tiernan and all the competitors, brutal weather conditions causing nearly a quarter the field to quit.

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Cold, rain push ultramarathon runners to limits in Run Rabbit Run

To outsiders, there always has been a bit of crazy in ultramarathons. But the racers themselves were questioning their sanity Saturday as they fought through weather conditions that some described as downright scary.